tailieunhanh - Enhanced sensitivity of surface plasmon resonance sensor based on combination of au/pedot:Pss nanolayers

This paper simulates an optical sensor utilizing a prism based on surface plasmon resonance (SPR). The simulations combine a layer of Au and an additional layer of different materials: aluminum arsenide (AlAs), poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS), zinc oxide (ZnO), and polydimethylsiloxane (PDMS) for SPR excitation. The simulations show that a sensor based on a combination of Au/PEDOT:PSS layers with thicknesses of 40 nm and 5 nm, respectively, offers a sensor sensitivity of °/RIU, which is times better than that of a sensor using only a thin Au layer. | DALAT UNIVERSITY JOURNAL OF SCIENCE Volume 11 Issue 1 2021 56-67 ENHANCED SENSITIVITY OF SURFACE PLASMON RESONANCE SENSOR BASED ON COMBINATION OF Au PEDOT PSS NANOLAYERS Nguyen Van Saua Ma Thai Hoab Nguyen Xuan Thi Diem Trinhb Nguyen Tan Taic a School of Basic Science Tra Vinh University Tra Vinh Vietnam b Department of Activated Polymer and Nano Materials Applications School of Applied Chemistry Tra Vinh University Tra Vinh Vietnam c Department of Materials Science School of Applied Chemistry Tra Vinh University Tra Vinh Vietnam Corresponding author Email nttai60@ Article history Received September 24th 2020 Received in revised form 1st October 28th 2020 Received in revised form 2nd November 3rd 2020 Accepted November 26th 2020 Available online February 5th 2021 Abstract This paper simulates an optical sensor utilizing a prism based on surface plasmon resonance SPR . The simulations combine a layer of Au and an additional layer of different materials aluminum arsenide AlAs poly 3 4-ethylenedioxythiophene polystyrene sulfonate PEDOT PSS zinc oxide ZnO and polydimethylsiloxane PDMS for SPR excitation. The simulations show that a sensor based on a combination of Au PEDOT PSS layers with thicknesses of 40 nm and 5 nm respectively offers a sensor sensitivity of RIU which is times better than that of a sensor using only a thin Au layer. The enhancement in sensor sensitivity offers advantages for early detection of small concentrations of bacteria in biomedical and chemical applications. Keywords Combination Optical sensor Sensitivity Surface plasmon resonance. DOI http 2021 Loại bài báo Bài báo nghiên cứu gốc có bình duyệt Bản quyền 2021 Các Tác giả. Cấp phép Bài báo này được cấp phép theo CC BY-NC 56 DALAT UNIVERSITY JOURNAL OF SCIENCE NATURAL SCIENCES AND TECHNOLOGY 1. INTRODUCTION Nowadays much research has been focused on the development of optical sensors based on surface plasmon resonance SPR .

• Vật lý
• Optical sensor
• Surface plasmon resonance
• Surface plasmon resonance sensor based
• Materials for simulation
• Change in resonance condition